Which cities did big data against pornography spread to?

Big data has spread to Beijing, Shanghai, Guangzhou, Shenzhen, Chengdu, Wuhan, Nanjing, Jinan, Harbin, Changsha and Fuzhou. Combating pornography and illegal publications is an important task of the state. In order to create a clean, hygienic, civilized and sunny social environment, departments at all levels across the country have joined forces to crack down on illegal activities such as online pornography and obscene articles. At present, the anti-vice big data monitoring system has spread all over many cities in China.